Recycled Water Customer Workshop

Transcription

1 Recycled Water Customer Workshop SAWS Recycled Water Team March 25, 2014

2 New Customers Gold s Gym Villas in Westover Hills Siena Park University Hospital Mission County Park San Antonio Animal Care Page 2

3 Purple Pipe Award presented by San Antonio Water System to recognize Toyota Motor Manufacturing Texas For your professional contribution to the SAWS Recycled Water Customer Program March 25, 2014 Frank Snyder Production and Treatment Operations Darren Thompson Director Water Resources Page 3

4 Planned Connections for 2014 Chevron Mission Solar Energy Far South Mining Frost Bank Brooks M.O.B Somerset Reclamation Center Page 4

5 Team Approach to Program Customer Development Recycle Operations & Treatment Support Backflow Protection/Cross Connection Control Emergency / Operations Control Center call 704 SAWS Master Planning & CIP Construction Inspections Production & Treatment Engineering Page 5

6 Purpose of Workshop Inform the users of recycled water background Provide refresher on the rules and regulations that cover use of recycled water Discuss contract obligations and notification requirements Discuss best practices for recycled water use Discuss recent upgrades and future plans for the system Networking opportunity for users Update Point of Contact list Answer any questions Page 6

7 Definitions Black Water water from toilets and urinals Grey Water untreated water from showers, sinks, and clothes washers new rules have been put in place Reclaimed/Reuse/Recycled Water highly treated effluent that meets or exceeds stream standards Page 7

8 Medio Creek WRC SAWS Recycled Water System Leon Creek I-10 Helotes Creek 1604 Salado Creek Leon Creek WRC Dos Rios WRC WRC (Water Recycling Center) Discharge location Recycled water distribution system Olmos Creek 410 Medio Creek Medio Creek WRC 90 Calaveras Lake Medina River Mitchell Lake Leon Creek WRC Braunig Lake Dos Rios WRC MILES N Page 8 San Antonio River

9 Types of Services Irrigation Industrial - Cooling towers - Manufacturing processes Dust suppression Stream augmentation landscaping golf courses cooling towers River Walk Page 9

10 Recycled Water Quality BOD 5 Turbidity E coliform Constituent TAC Chapter 210 Standards Regulatory Standard SAWS 2013 Analystical Results 5 mg/l 2.02 mg/l 3 ntu 0.75 ntu < 20 cfu/100 ml 1.39 cfu/100 ml Additional Contractual Standards Constituent Contractual Standard SAWS 2013 Analystical Results NH3 N ph Total Suspended Solids (TSS) < 2.0 mg/l 6.0 to 9.0 su < 15 mg/l 0.70 mg/l 6.2 to 8.9 su 1.29 mg/l Total Dissolved Solids (TDS) < 1500 mg/l 704 mg/l Sodium Adsorption Ratio (SAR) < 5 meq/l 2.6 meq/l Residual Sodium Carbonate (RSC) < 1.5 mg/l 0 meq/l Page 10

11 Regulatory Guidelines Texas Administrative Code Chapter 290 for Potable Water Texas Administrative Code Chapter 210 for Reclaimed Water Local Chapter Code 34 and TAC 217 TAC 344 (Irrigation Rules) International Plumbing Code (2012 with amendments) SAWS Backflow and Cross Connection Control Program AWWA Cal/Nevada Guidelines USEPA 2004 Guidelines for Reuse Water Page 11

12 Chapter 210 Particulars Separation requirements Texas PE requirement for stamp and signature Safe Drinking Water Act Cross connection control & backflow back siphonage Customer service inspections Page 12

13 Chapter 210 Particulars Contract Uses of recycled water Color coding - Potable and recycled water - Above and below grade Signage Page 13

14 Additional Requirements No hose bibs, faucets allowed off of irrigation system Keyed access only (quickcouplers are acceptable) Spill notification call 704 SAWS Page 14

15 Annual Shutdown Test Procedure Contact customer days ahead Customer provides T&M reports for ALL containment devices BEFORE shutdown Scheduling of customer personnel (1/1) Install data loggers and take samples Perform two way shutdown on potable and recycled water services and restore service Page 15

16 Protocol for Compliance Assurance Page 16

17 Best Management Practices Cooling Towers Ortho phosphates/nitrates Microbial control Misting concerns Nutrients Page 17

18 Best Management Practices Irrigation Onsite storage ponds Onsite distribution system Chlorides and sodium Page 18

19 Best Management Practices Water Quality Warm season grasses tolerant of salt residue Occasional leaf burn/species dependent minimize spray arc No empirical evidence on salt build up within soil in our ecosystem Small amount of nitrogen Regulatory Agencies TAC 210 Rules on Reclaimed Water purple, purple, purple TAC 344 Rules on Irrigation design & maintenance and on Irrigators City of San Antonio Chapter 34 Waste& Drought Rules Page 19

20 Best Management Practices When can I water? 7 days a week Not from 10 am 8 pm During Drought Stages Must be 100% recycled water SAWS will check Must have signage Irrigation systems must be registered. Fountains should be the new ordinance will require it. Can I still receive a citation? Yes, for the following Water running down the street Watering between 10 am and 8 pm No signage Page 20

21 Best Management Practices Examples of Signage Must be in a location where the public can see it Page 21

22 Remember! More plants are killed by over watering than by under watering Page 22

23 User Agreement Agreement now in use CPS Energy commitment takes precedence in critical flow periods Responsibilities of the parties Page 23

24 How System is Laid Out Page 24

25 Recycled System Model Samuel Johnson Jr EIT Quintin Pollok PE March 25, 2014 Model Building ArcGIS is used to create the infrastructure in the model All physical infrastructure is represented in the model System demands are obtained from field data and user contracts The model is calibrated using info from SCADA, flow meters, and pressure recorders Page 25

26 Recycled System Model Samuel Johnson Jr EIT Quintin Pollok PE March 25, 2014 Page 26

27 Recycled System Model Samuel Johnson Jr EIT Quintin Pollok PE March 25, 2014 Requirements for Performing Analysis Average Day Demands (gal/min) Peak Demands (gal/minute) Total Volume (acre ft/year) Page 27

28 What's New and Planned Medio Creek WRC pump station Brooks pump station Interconnect automation Page 28

29 Summary SAWS provides Type I recycled water Permits, inspections, and signs Annual certification Protection of water supplies and cross connections Notification of spills and modifications Communication Planning for success Page 29

30 Questions and Discusion??? Page 30

31 Recycled Water Customer Workshop SAWS Recycled Water Team March 25, 2014